Steven P Crocker

US Patent:

7930756, Apr 19, 2011

Filed:

Mar 31, 2003

Appl. No.:

10/404566

Inventors:

Steven Toye Crocker - Redwood City CA, US
Denis Jacques Paul Garcia - Palo Alto CA, US

International Classification:

G06F 12/14
G06F 21/22
G06F 21/24

US Classification:

726 27, 726 26, 726 28, 726 29, 726 30, 705 57

Abstract:

Enhanced multi-level cryptographic transformations that secure electronic files are disclosed. The secured electronic files contain not only secured data but also security information. The security information includes cryptographic structure information, access rules and secrets (e. g. , keys). The cryptographic structure information explains the multi-level cryptographic transformations associated with securing or unsecuring the electronic files. The access rules and the secrets are used by the cryptographic transformations to secure the electronic files. Since the secured electronic files contain the cryptographic structure information, the particular cryptographic transformations (including their sequencing) can vary with each electronic file, if so desired. Typically, the secured electronic files are secured and managed by a file security system, such as a distributed security system.

US Patent:

8543827, Sep 24, 2013

Filed:

Mar 27, 2008

Appl. No.:

12/057015

Inventors:

Denis Jacques Paul Garcia - Palo Alto CA, US
Michael Michio Ouye - Mountain View CA, US
Alain Rossmann - Palo Alto CA, US
Steven Toye Crocker - Burlingame CA, US
Eric Gilbertson - Menlo Park CA, US
Weiqing Huang - Flower Mound TX, US
Serge Humpich - Tournan-en-Brie, FR
Klimenty Vainstein - San Francisco CA, US
Nicholas Michael Ryan - Sunnyvale CA, US

Assignee:

Intellectual Ventures I LLC - Wilmington DE

International Classification:

G06F 7/04

US Classification:

713184, 713166, 713167, 713168, 713169, 713170, 726 26, 726 27, 726 28, 726 29, 726 30

Abstract:

In a system for providing access control management to electronic data, techniques to secure the electronic data and keep the electronic data secured at all times are disclosed. According to one embodiment, a secured file or secured document includes two parts: an attachment, referred to as a header, and an encrypted document or data portion. The header includes security information that points to or includes the access rules and a file key. The access rules facilitate restrictive access to the secured document and essentially determine who/when/how/where the secured document can be accessed. The file key is used to encrypt/decrypt the encrypted data portion. Only those who have the proper access privileges are permitted to retrieve the file key to encrypt/decrypt the encrypted data portion.

US Patent:

20030120601, Jun 26, 2003

Filed:

Apr 22, 2002

Appl. No.:

10/127109

Inventors:

Michael Ouye - Portola Valley CA, US
Steven Crocker - Redwood City CA, US

Assignee:

SecretSEAL Inc. - Menlo Park CA

International Classification:

G06F017/60

US Classification:

705/051000

Abstract:

To grant or deny access rights to a user attempting to access a protected system or secured electronic data, an access right evaluation process is carried out among all applicable policies including those embedded in the secured electronic data. In a preferred embodiment, the access right evaluation process is invoked only when a system being accessed is protected or a file being accessed is detected to be in a secured format. Further, the access right evaluation process is configured preferably to operate transparently to the user. The access right evaluation may be advantageously used in systems or applications in which devices, mediums or electronic data are secured and can be restrictively accessed by those who are authenticated and have proper access privilege.

US Patent:

20140075206, Mar 13, 2014

Filed:

Sep 23, 2013

Appl. No.:

14/034147

Inventors:

Denis Jacques Paul Garcia - Palo Alto CA, US
Micheal Michio Ouye - Mountain View CA, US
Alain Rossmann - Palo Alto CA, US
Steven Toye Crocker - Burlingame CA, US
Eric Gilbertson - Menlo Park CA, US
Weiqing Huang - Flower Mound TX, US
Serge Humpich - Tournan-en-Brie, FR
Klimenty Vainstein - San Francisco CA, US
Nicholas Micheal Ryan - Sunnyvale CA, US

Assignee:

Intellectual Ventures I LLC - Wilmington DE

International Classification:

G06F 21/60

US Classification:

713193

Abstract:

In a system for providing access control management to electronic data, techniques to secure the electronic data and keep the electronic data secured at all times are disclosed. According to one embodiment, a secured file or secured document includes two parts: an attachment, referred to as a header, and an encrypted document or data portion. The header includes security information that points to or includes the access rules and a file key. The access rules facilitate restrictive access to the secured document and essentially determine who/when/how/where the secured document can be accessed. The file key is used to encrypt/decrypt the encrypted data portion. Only those who have the proper access privileges are permitted to retrieve the file key to encrypt/decrypt the encrypted data portion.